Chock block



March 15, 1932. c. L. SNYDER 1,849,964

. CHO CK BLOCK Filed May 27, 19:51

gwdenl oz Patented Mar. 15, 1932 UNE'TED STATES PATENT 'oF'FicE CLIFFORD L. SNYDER, 0F DETROIT, MICHIGAN, ASSIGNOR TO EVANS'PRODUCTS OOM- IE'ANY, OF DETROIT, MICHIGAN, A. CORPORATION 'OF DELAWARE CHOCK BLOCK Application filed May 27,

This invention relates to certain new and useful improvements in chock blocks.

The primary object of the invention is to provide a chock block comprising a casting or metal stamping of substantially inverted V-formation providing angularly disposed walls with one wall fashioned for intimate contact with a vehicle wheel tire while the other wall constituting a brace arm is 'de signed to resist excessive strains under impact.

A further object of the invention is to provide a metal chock block of the foregoing character wherein the rear wall thereof is transversely curved to increase the strength thereof and practically eliminate collapse of thearched wall in the presence of severe stresses under impact.

It is a further object of the invention to provide a transversely/curved brace wall in a metal chock block that is corrugated in a lengthwise direction for increasing the strength of the brace wall and chock block.

With the above and other objects in view that will become apparent as the nature of the invention is better understood the same consists'in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings Figure 1 is a perspective view of a metal chock block constructed inaccordance with the present invention, showing the dished Wall for the support of a vehicle tire and transversely arched angularly disposed brace wall;

Figure 2 is a side elevational view;

Figure 3 is a vertical longitudinal sectional view taken on line 33 of Figure 1;

Figure 4 is a horizontal sectional view taken on line 44 of Figure 2 showing the transversely arched corrugated rear brace wall of the chock block;

Figure 5 is a horizontal sectional view,

1931. Serial No. 540,435.

similar to Figure 4: showing the rear brace wall transversely curved and uncorrugated; Figure 6 is a perspective view of another form of chock block wherein the corrugations or reinforcing ribs are formed in both walls of the block; and I Figure 7 is a fragmentary side elevational view showing a bent over reinforcing anchor toe for the block. 1 1

In metal chock blocks of the general character disclosed herein, it has heretofore been customary to form the walls thereof in straight lines, of a flat characteristic'with the result that the brace wallsection thereof that is subjected to severe stresses in service is subject to collapse and for this reason, a sheet metal or stamped chock has been impractical. The gist of this invention resides in the strengthening of the brace wall of the chock and is accomplished by transversely curving the brace wall and in actual practice, this particular design of brace wall has proved highly eflicient and able to withstand severe stresses in service and it has also been found that by the provision of longitudinally ex, tending corrugations in the transverse, curved brace wall, additional strength is. added thereto so that a metal chock block while comparatively light in weight can be possessed of sufficient inherentstrength for theproper bracing and supporting of a motor I vehicle during shlpment.

Referring more in detail to the accompany ing drawings, the chock block illustrated in Figures 1 to 4 is formed of metal and preferably stamped from a blank into substantial-j ly inverted V-formation, comprising a front wall 10 and a rear wall 11 with the median line 12 forming the upper end or head of the chock. The wall 10 of the chock is provided with a relatively deep depression 13 extending substantially the entire length thereof and spaced from the side edges of the sup-. port ofa vehicle Wheel tire and said wall 10 atopposite sides of the depression 13 extend edges of the wall 10.

in straight linesfrom the lower to the upper ends of the wall with a longitudinally extending depression 14: parallel with each edge defining a reinforcing bead, the beads extending substantially the full length of the side The lower edge of the wall 10 carries an anchor toe 15 extending outwardly thereof with corner openings 16 therein for the passage of anchor devices, such as nails or spikes. g The other wall 11 of the .chock which constitutes .the brace wall is transversely curved as at'lla over the entire length thereof and saidtransverse curvature extends through the upper end 12 of the chock. V of the transverse curvature in the wall 11', the bracing characteristic of 7 increased over the usual straight or flat 'wall so that collapse of the brace wall 11 is practically eliminated, it being understood that this wall of the chock block is suhj ected to severe stresses and strains whenthe chock is in service. With the idea of further increas ing the bracing strength of the wall 11,, the same is longitudinally corrugated at 17,

substantially overthe entire length thereof.

The lower'end'of the wall 11 carries an anchor heel18 directed outwardly thereof at an angle and provided with openings 19 for the passage of hold fast devices such as nails, spikes etc.

In the form of the invention shown in Figure 5, the wall 10a of the chock has the wheel tire supporting depression 13a formed therein and the side edges of the wall 100. laterally of the'depres'sion 13a are rolled as at-14a for reinforcing-purposes. The other wall llb'is transverselycurvedtor increasing the bracing strength thereof, but is unprovided with corrugations as illustrated in Figure 4:.

Another form of the invention isshown in Figure 6, the chock block being of inverted V-formation having walls 20 and '21, the wall 20 having a tire receiving depression 22 therein, the Wall '21 beingtransversely curved as at 21a while reinforcing beads 22' are formed in both walls 20 and 21 and extend over the upper edgeot the chock.

It isalso intended to reinforce the anchor toe for the chock as illustrated in Figure 7, the toe 15a'being bent upon itself as illustrated. i

The gist of this invention resides in the provision of the transversely curved wall of the chock and-increased resistance to the bending of a curved wall over a flat wall is a known fact as set forth in Mark s-Mechanical En gineers Pocket Book, 1924. The-publication shows a relative resistance between straight and curved plates as beingapproxiinately of the ratio of 1 to 376. The increased strength of a curved wall in the present instance will at once be appreciated when co npared'with a flat wall heretofor employed in this art 1357 the provision said wall is greatly.

and by the use of such a curved wall, the metposed walls, one for the support of a wheel tire, the other wall constituting a brace and being transversely curved over the length thereofland said curved wall being longitudinallycorrugated.

2. A one-piece metallic chock of inverted V-shape comprising a pair of angularly disposed walls, one for the support of a wheel tire, the other wall constitutinga brace and.

being transversely curved over the length thereof, and both of said walls being longitudinally corrugated.

3. A one-piece metallic chock of inverted V-shape comprising a 7 pair of angularly disposed walls, one for the support of a wheel tire, the other wall-constituting a brace and'being transversely curved overthe length thereof,-the walls-of saidchock being longitudinally corrugated from end to end, with the corrugations extending over the upper edge ofthe chock. v

4. A one-piece metallic chock formed of stamped-metal and of inverted V form ;provid-. ing ang'ularly disposed walls, one wall havinga-de'pression therein inwardly ofiitsborder for the support of-a wheel-tire with the side-edges of the walladjacent thedepression extending in straight lines from the toe to the head-and the other wall being transverse 1y curved throughout the length thereof with the'curvature. extending into the head-of the tire-supporting wall,

Intestimony whereofI alii-x si'gnature.

CLIFFORD L. 's Ynnn. v

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